For section 25A(4) of the Metropolitan Fire Brigades Act 1958 substitute —
"(4) Subsection (3)(a) does not apply to an agreement or arrangement for the provision of goods or services by the Board—
(a) to a unit or group of units or to a person acting on behalf of a unit or group of units; or
(b) where the provision of those goods or services falls within the general duties and functions of the Board.".